Robalo Fuzz is a One Knob silicon fuzz pedal based on the bazz fuss circuit. Designed for bass due to its magnificent low end, it is also ideal for guitars since the instrument's circuitry interacts with the pedal giving different palettes of sounds using the tone knob or by chopping up the sustain with the volume. Works with 9V center negative power supply. Handmade in Galicia from recycled cans. We won't change the world, but your tone will ????♻️????